Author Notes:

You step back out of the error room with book in tow, and after having the doors flipped back around you head off looking for Fuse and Dr. Finch. You find them talking to Pierce in the bunker's break room. Dr. Finch is furiously taking notes while Pierce talks about magic.

You approach, asking if Pierce might want a cleantex effect so he can remember everything more vividly.

You cleantex Pierce, and while Dr. Finch continues to take notes--and while Pierce begins to help him sketch out runes and symbols he now recalls perfectly--you take Fuse aside.

You explain to Fuse what the library had said about him--that he's more psychic than he realizes. You also explain the... er... context of that conversation.

"So... let me see if I have this right," Fuse starts. "The library changed how I found it? Like, Lydia discovered it recently... and the library just undid that, and made itself show up on a website earlier in my life instead?"

It takes a moment for Fuse to process all that. "...Okay then. So the library screwed with time, but I remembered both things happening. Maybe that's what it meant? When somebody tries to retcon reality, I'm aware of both... like... timelines, I guess. Explains why the cleantex didn't work--I was remembering things that didn't happen anymore. Or... hasn't... happened. Anymore. Whatever."

Fuse takes a deep breath, and throws his hands up. "That's cool, I guess, but I kinda hope that's never useful again because holy shit."

Would being aware of Retconned Reality be considered the greatest or lamest superpower? I mean with that whole I hope that never happens again thing at the end by Fuse it's going to happen again but like how is this useful? I mean worst case scenario Thale figures out how to warp reality and Fuse is the only person who can save Jane because he remembers how everything was before but still how is that useful?

"Those who do not learn history are doomed to repeat it." - George Santayana

It's not future predicting but having access to the mistakes of the past means being able to possibly prevent making those same mistakes in the future.
Like the summon Thale plan: "Hey guys, turns out a different us tried that and it turns out Thale can counter-summon... and that he keeps a lot of hired guns around where he can counter-summon us to. So let's not go that route."
The timing aside, the other big hurtle is being able to find the one comfy path in the huge forest of dead-ends of the infinite failed/retconned universes that actually leads to progress.
Oh also that abusing such an ability might cause Fuse to go insane and be unable to tell which reality he's in.

Seems like Pierce is being pretty generous with his help, ask him if he'd like to help us go through the Geoangular Control book.

We can also ask him about any mistakes his previous group made, so that we can avoid that going forward.

We should set up the information ritual, there are a lot of questions we could use answers for.
How to condense Faraday
How to render the handcannon inoperable or safe
Is there an easier way to rid someone of Nil's influence than editing every tainted memory

So at this point, I'm thinking we should at least make plans for the Petition for Information: Getting necessary materials and setting up whatever is needed to perform the ritual. The key word being plan - it's late/getting late and it might be better to save actually doing that for tomorrow.
THAT said, I also don't think it should be our go-to solution for our problems. We don't know what kinds of prices we'll be dealing with and bad questions may result in bad answers anyway. Plus, the more precise the question, the better the result and probably lesser the cost will be.
I was thinking of saving the Ritual for very specific questions; much in the same manner as getting a 1-letter hint in a crossword puzzle vs. having the entire line solved for us. As an example: Rather than ask, "How do we get Faraday back to her human-ghost self," we'd ask, "What is the first step in getting Faraday back to her human-ghost self." More precise, less cost (I don't think it's precise enough but it works well enough as just an example).

Let's just keep Pierce doing what he's doing now, it seems to go well.
Talk to Fuse about it some more if he wants to, and then get started on the petition for information: for starters, let's ask for an eldricht code of conduct so we don't step on any figurative (or perhaps even literal) toes.